The technical requirements for the lost pattern made from the paraffin-stearin and the shell mould made from colloidal silica in the precision casting were introduced.
介绍用石蜡-硬脂酸低温模料制作熔模，用硅溶胶作粘结剂制造模壳的工艺。
Preparation process of colloidal silica coating and compound shell making technology are introduced. In addition, the application results has been analyzed briefly.
介绍硅溶胶涂料的配制过程及复合制壳工艺，对使用结果作了简要分析。
Preparation process of colloidal silica coating and compound shell making technology are introduced. In addition, the application results has been analyzed briefly.
介绍硅溶胶涂料的配制过程及复合制壳工艺，对使用结果作了简要分析。
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